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Reddman
Joined: 28 Feb 2007
Posts: 70
Location: South Carolina
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| Posted: Tue Aug 26, 2014 5:23 pm Post subject: Marquee 8500 issue |
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Guys,
Last night my Marquee 8500 developed this issue with the picture being curved at the sides. I also noticed a burned electronics odor coming from it also. Strangely there is no faults being shown on the CLM. The odor appears to becomimg from the location where the HDM board is housed. As far I can tell the controls still work fine. Phase, size, geom, conv etc. Other than this problem the 8500 has been very stable and reliable for me. I'll attached an image below showing what the picture looks like. Thanks for any help you can give to help figure this out.
Just to provide more details right before this happened,the picture suddenly looked like it was tearing. Like the image was too close to the edge of the tubes. I checked to make sure it but it wasn't.
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draganm
Joined: 08 Mar 2006
Posts: 8990
Location: Colorado
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| Posted: Tue Aug 26, 2014 5:44 pm Post subject: Re: Marquee 8500 issue |
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| Reddman wrote: | | As far I can tell the controls still work fine. Phase, size, geom, conv etc. . |
looks like side Pin-cushion? does side pin still work?
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dvh99
Joined: 25 Dec 2009
Posts: 2158
Location: nederland
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| Posted: Tue Aug 26, 2014 5:45 pm Post subject: |
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dpb is failing i guess.
push the chips on the clm and dpb and clean contacts on the clm.
_________________
1 answer always poses multiple questions.
marquee 9500ultra HD10L moome hdmi1.3 v3+ some mods.
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Curt Palme
CRT Tech
Joined: 08 Mar 2006
Posts: 24396
Location: Langley, BC
TV/Projector: All of them!
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| Posted: Tue Aug 26, 2014 5:57 pm Post subject: |
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If you smelled something burning, it likely is more than contacts. Do reseat the chips and boards on the CLM, and see if the side pin and keystone work. Could be the HDM, convergence board or CLM.
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Reddman
Joined: 28 Feb 2007
Posts: 70
Location: South Carolina
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| Posted: Tue Aug 26, 2014 9:56 pm Post subject: |
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Most of the geometry controls still work except for side pin and keystone. I'll try reseating the boards again tomorrow morning after I get home from work.
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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Reddman
Joined: 28 Feb 2007
Posts: 70
Location: South Carolina
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| Posted: Wed Aug 27, 2014 1:11 am Post subject: |
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What's the best way to check that out?
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Curt Palme
CRT Tech
Joined: 08 Mar 2006
Posts: 24396
Location: Langley, BC
TV/Projector: All of them!
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| Posted: Wed Aug 27, 2014 1:27 am Post subject: |
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Swap out the board, or send it to myself or Tim for testing. It could be a number of issues as I indicated above.
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Reddman
Joined: 28 Feb 2007
Posts: 70
Location: South Carolina
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| Posted: Wed Aug 27, 2014 2:15 am Post subject: |
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I'll shoot you an email tomorrow and we can go from there.
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draganm
Joined: 08 Mar 2006
Posts: 8990
Location: Colorado
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| Posted: Wed Aug 27, 2014 4:09 pm Post subject: |
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| Reddman wrote: | | Most of the geometry controls still work except for side pin and keystone. I'll try reseating the boards again tomorrow morning after I get home from work. |
yup, both of those wave-forms are either generated or amplified on the HDM (can't remember which off the top of my head), keystone for sure as I have a bad HDM here with no key control.
Never was able to fix that sucker. 
I wouldn't even bother sending it, just buy a newer HDM, go for a newer 08P from an Ultra
oh and please Pull the HDM and take a pic of the burnt spot for our information.
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Tim in Phoenix
Joined: 21 Oct 2006
Posts: 4409
Location: Phoenix
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| Posted: Fri Aug 29, 2014 3:08 am Post subject: |
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Guys
It could be a vertical pulse that syncs the key and pin has gone missing; suggest you send me the HDM, control board and vertical board for testing.
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Reddman
Joined: 28 Feb 2007
Posts: 70
Location: South Carolina
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| Posted: Sat Aug 30, 2014 5:04 pm Post subject: |
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Just to give an update. After reseating the boards and cleaning the contacts, the projector seems to have started to perform normally again. All controls perform as intended.I'm not sure how long it will continue to do so however. I've been running it for several hours at a time and so far so good. Thanks for all the suggestions
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draganm
Joined: 08 Mar 2006
Posts: 8990
Location: Colorado
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| Posted: Sat Aug 30, 2014 5:39 pm Post subject: |
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| Reddman wrote: | | Just to give an update. After re-seating the boards and cleaning the contacts, the projector seems to have started to perform normally again. All controls perform as intended.I'm not sure how long it will continue to do so however. I've been running it for several hours at a time and so far so good. Thanks for all the suggestions |
well if you smelled something burning I would try and find out what it was. Fitst place I would look is by pulling out the horizontal deflection board and checking the connector on the motherboard. That is one spot where I have seen burned sockets from poor pin contact.
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Reddman
Joined: 28 Feb 2007
Posts: 70
Location: South Carolina
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| Posted: Sat Aug 30, 2014 7:11 pm Post subject: |
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I looked at the motherboard closely and I didn't see anything that had any signs of anything being burnt. I really don't smell the burnt odor anymore. I did clean the projector thoroughly when I had it partially disassembled. I'll pull the HDM board again and recheck. Can never be to careful.
As a side note Dragan, this is the Marquee 8500 I purchased from you years ago. This is the first real "issue" that I've experienced with it.
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draganm
Joined: 08 Mar 2006
Posts: 8990
Location: Colorado
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| Posted: Mon Sep 01, 2014 5:06 pm Post subject: |
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| Reddman wrote: | | As a side note Dragan, this is the Marquee 8500 I purchased from you years ago. This is the first real "issue" that I've experienced with it. |
good ot hear its been solid for so long but it's rare to smell something burnt and then have everything run normally. No point in worrying about it though, if you couldn't find anything and it's still running normally then just use it.
Depending on how long ago you bought it would determine how much was done ot the boards, I did a lot more in the last 3 years than prior, but the basics would have been there. P14 filament voltage, anamorphic mod, cleaning of all socketed chips, Dot fix, etc. would have all been done going back 10 years.
Parts are plentiful too, machine should easily run for years to come. Got over 10 years on mine and it's still cruising along to regular movie nights and game of thrones binge watching.
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Reddman
Joined: 28 Feb 2007
Posts: 70
Location: South Carolina
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| Posted: Tue Sep 02, 2014 2:53 am Post subject: |
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Honestly I'm not overly worried about whether the issue returns or not as I have a 1209s waiting in the wings. I've put quite a few hours on the Marquee and I look forward to putting many more on it. 
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